A grand jury yesterday secretly grilled Southampton cops on the Lizzie Grubman SUV debacle – as her lawyer hinted she could still go against the odds and opt to testify.

Two of Grubman’s famous, well-connected pals – sexy actress Tara Reid and wealthy young entrepreneur Andrew Sasson – are expected to appear before the 23-member panel in the next two weeks.

As for the highly unusual step of having Grubman personally plead her case before the grand jury, her powerhouse lawyer, Stephen Scaring, left the door open a crack.

“I can’t comment on that,” Scaring said when asked about the possibility of the 30-year-old publicity guru testifying.

“I’m not going to say anything about whether she will or won’t appear.”

Grubman is the target of a criminal-indictment bid by the Suffolk County District Attorney’s office.

She is accused of backing her Mercedes SUV into a crowd outside the posh Conscience Point Inn on July 7 after becoming furious over a bouncer telling her to move from the fire lane.

She fled the scene and was tracked down by cops at Sasson’s house two hours later.

Grubman has insisted the incident was an accident. But bar bouncer Scott Conlon, a key witness expected to testify before the grand jury this week, alleges in his $27million suit against her that she hissed at him, “F – – – you, white trash!” before striking and injuring Conlon and 15 others.

Conlon’s suit also charges that Grubman was drinking and using drugs earlier in the night, an allegation Grubman vehemently denies.

She has been charged with assault, reckless endangerment and leaving the scene of an accident.

Yesterday’s proceeding featured five cops from the trendy pleasure beach town parading into the courthouse in Riverhead.

Others set to appear include Reid, the “American Pie” cutie who is said to have partied with Grubman at a celebrity-studded beach clambake before the Conscience Point incident, and Sasson, Grubman’s ex-boyfriend, whose business manages the chic club.